1142144465 has 32 divisors (see below), whose sum is σ = 1783074816. Its totient is φ = 681024960.

The previous prime is 1142144459. The next prime is 1142144467. The reversal of 1142144465 is 5644412411.

It is not a de Polignac number, because 1142144465 - 2¹⁶ = 1142078929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1142144467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55637 + ... + 73346.

It is an arithmetic number, because the mean of its divisors is an integer number (55721088).

Almost surely, 2^1142144465 is an apocalyptic number.

It is an amenable number.

1142144465 is a deficient number, since it is larger than the sum of its proper divisors (640930351).

1142144465 is a wasteful number, since it uses less digits than its factorization.

1142144465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129029.

The product of its digits is 15360, while the sum is 32.

The square root of 1142144465 is about 33795.6278977030. The cubic root of 1142144465 is about 1045.2985464469.

Adding to 1142144465 its reverse (5644412411), we get a palindrome (6786556876).

The spelling of 1142144465 in words is "one billion, one hundred forty-two million, one hundred forty-four thousand, four hundred sixty-five".